fix bug

py-client/libs/grid_take_profit.py

@@ -73,8 +73,3 @@ class GridTrailingTracker:
         with self._lock:
             self._peaks.pop(position_key, None)
 
-    def retain(self, position_keys) -> None:
-        """删除已不在券商持仓中的峰值，避免同代码重新开仓继承旧状态。"""
-        active = set(position_keys)
-        with self._lock:
-            self._peaks = {key: value for key, value in self._peaks.items() if key in active}